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M. GARLAND & 0. M. PRESCOTT. SAWING MACHINE.

No. 515,734. Patented Feb. 27, 1894 Wmesaew- L a @gh;

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M. GARLAND & 0. M. PRESCOTT.

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Patented Feb. 2-7, 1894.

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UNETE 'rn'rns some IiIIOHAEL GARLAND AND CHARLES M. PRESCOTT, F BAY CITY, MICHIGAN;

SAID PRESCOTT ASSIGNOR TO SAID GARLAND.

i l SAWING-MACHINE SPECIFICATION forming part of Letters Patent No. 515,734, dated February 2'7, 1894.

Application filed November 2'7, 1893, Serielllo.4; 92,033. (N0 model.)

To all whom zit may concern: tion of travel of the carriage. Fig. 3, is a ver- Be it known that we, MICHAEL GARLAND tical cross-section of one of the trucks, pass and CHARLES M. Pnnscorr, both of Bay City, ing through the axis of wheel shaft, or axle; in the county of Bay and State of Michigan, drawn on an enlarged scale; and havlng the 5 have invented a certain new and useful Immiddle portion of the head-block and shaft,

proveinent in Sawin -Machines; and we do or axle of the trucltbroken out, and the wheels hereby declare that the-following is a full, moved toward each other, to get the figure clear,andexact description of thesam.e,referwithin the requisite space, on the sheet of ones being had to the accompanying drawdrawings. 1o ings, forming part of this specification. In the several figures, the same part Will be Our invention relates to that type of sawfound always designated by the same letter ing machines, in which the logs are mounted of reference. i on a traveling carriage, or truck, which car A represents the main frame properly 7 ries the log along in the proper relationship mounted, on the supporting beams 13; and C :5 to the saw, to have the latter out it, in the the saw mandrel running in journal boxes D, usual manner. In this type of sawing ma- D, on the main frame A; E, the dlivmg P chine, it is important to havethe wheels of lay; and F the circularsaw of acircular sawthe trucks adjustable, laterally of the trucks, ing machine; all made and operating in the so as to set and maintain the carriage in line usual and well understood manner. 7c 20 with the saw, and heretofore the construction N and N are the track rails on which travel, ofthe truck has been such that such adjustrespectively, the plain-faced truck wheels M, ment could be efiected; but by means defectand the peripherally grooved guide-wheels ive, or undesirable in construction and mode M of the trucks. of action 7 i J are the head-blocks of the carriage, mount- 25 Our invention consists mainly in a novel ed, as usual, on the longitudinal beams H, to construction whereby, while the carriage can the under sides of which beams are secured be perfectly adjusted tosetand maintainit in (by the bolts I passing vertically through perfect alignment, so to speak, with the saw, them) the truck boxes L and L" in each pair the means of adjustment are of a novel and of which is mounted an axle, or shaft K; all o lmproved character; aswill be fully eX- as plainly shown.

plained hereinafter, and as will be particu- The guide-wheel M is shrunk onto, or is larl y pointed out in the claims of this specifiotherwise made fast to, the axle, or shaft, K 5 cation. and the box L is held in placelongitudinally,

To enable those skilled in the art to which on said shaft, by the clamped-on collar L 8 5 3 5 our invention relates, to make and use mabetween which and the inner end of the hub chines containing (either in part, orin whole), of wheel M said box L is confined. The our invention, in either the precise form in other wheel M; which has a plain periphery which we show'the same carried into effect, and is, hence,.adapted to move some, as ooor made under some modified construction, casion may require, sidewise, on the track N, 40' we will now proceed to more fully describe is mounted to turn freely on shaft K, and it our improvements, referring by letters to the is made, as shown (see Fig. 3) with a long accompanying drawings which form part of hub, or sleeve-like portion M which surthis specification,and in which we have shown rounds the shaft K, and serves as a sort of our invention carried outin that precise form, bushing thereon that turns within the jour- 45 of machine in which we have, so far, pracnal box L; said sleevelike part M of wheel iced M being provided, at its inner end, or portion, i In the drawings, Figure l is a top, or plan, with a clamping collar L that serves to hold I view of a circular sawing machine, with a it in place endwise within the journal box L;

traveling log carriage, and embracing our inall as clearly shown in the drawings. no 5-9 ventlon. Fig. 2 is an elevation of the same, From what isshown in the drawings, and looking at the machine in line with the direcfrom what we have, so far explained, it Will be understood that while the relationship of the fast guide-wheel M (with its axle or shaft K and box L) to the rail N are unchangeable, the wheel M, together with its box L may be made so as to shift the tread, or periphery, of the wheel sidewise of the rail N, provided the head-block J and the beam I-I bolted to the other journal box L be adjusted; and we will now describe the means by which, and the manner in which, the said head-block J, together with its two beams, the journal box L, and the loose wheels M are adjusted. The bolt L, which has a broad fiat head as, is provided with a nut at L, that bears home against the plate L of beam H, and this bolthas its threaded extension passed through a hole in the upwardly projecting plate, or ear-piece, L of the box L, and has said threaded extension provided with two nuts L, L, which, as shown, are screwed, or turned home against the said ear-piece L Now, it will be seen that by loosening one of these two nuts and turning up the other (in one way, or the other) the head-block J with its attached journal-box L, and the loose wheel M (the sleeve M of which is free to slide on the shaft K) will be 1noved,or adjusted, in one direction, or the other, to throw the said head-block either nearer to, or farther from, the saw F, as and for purposes Well understood. In this manner a perfect alignment of the trucks with the plane in which the saw is designed to cut, may be easily made and maintained.

By having the loose wheel M made with the long hub M that turns on shaft K, and on which the journal-box L is held in placebotween the inner side of the wheel and the clamped-on or set-collar L we are enabled not only to dispense with the usual clamping collar located at the end of the shaft K, and often in the way of the log-turner; but we also give to the wheel M such a long bearing on the shaft K, that the journal bearing at this locality is vastly more durable than in the construction of trucks heretofore known and used.

Of course, variations in the details of construction may be made, without changing the principle of construction, or mode of operation of our improved machine, and, hence, without departing from our invention.

In practice we make the bearingsurface of the shaft K in the sleeve M about twelve inches long, whereas in the old construction of truck, this loose wheel has a bearing only about two and a half inches long. These necessarily short bearings soon wear and the carriage is then allowed to move, or play, sidewise, rendering the operations of the machine defective and objectionable.

Having now so fully explained our improvement that those skilled in the art can make and use ourinvention, what we claimas new, and desire to secure by Letters Patent, is

1. In a sawing machine of the type'referred to, the combination, with the usual truck axle and a guide-wheel fast on one end thereof, of a loose wheel on the other end of said axle formed, or provided, with a sleeve-like part, within which the axle has its bearing, and

which turns within the journal-box of the truck; substantially as and for the purposes set forth. j

2. In asawing machine of the type referred to, the combination with the axle; the headblock mounted on suitable beams, the loose wheel and its journal-box, immovably connected to the head-block; and the journal-box arranged near that end of the axle that carries the fast Wheel, of means for adjusting and holding in place the head-block and its attachments, in the direction of the length of the axle, all substantially as and for the purposes hereinbefore set forth.

In witness whereof we have hereunto set our hands this 11th day of September, 1893.

MICHAEL GARLAND. CHARLES M. PRESCOTT.

In presence of MORRIS L. COURTRIGHT, ALFRED B. LENNOX. 

